code: def brute_force3(f, dy, dx, dz):
      res = np.zeros((f.max() + 1, f.max() + 1), np.double)
      for y in range(f.shape[0]):
          for x in range(f.shape[1]):
              for z in range(f.shape[2]):
                  if (
                      0 <= y + dy < f.shape[0]
                      and 0 <= x + dx < f.shape[1]
                      and 0 <= z + dz < f.shape[2]
                  ):
                      res[f[y, x, z], f[y + dy, x + dx, z + dz]] += 1
      return res
  
imports: import numpy
  from mahotas.features import texture
  import mahotas
  import mahotas.features._texture
  import pytest
label_desc: Use image node_id 4 for calling a global function with example usage: brute_force3(f, dy, dx, dz) and returns: res